1-Benzoylmethyl-4-piperonylpiperazine dihydrochloride 2-(4-Piperonyl-piperazin-1-yl)acetophenone dihydrochloride 6761-63-3 ACETOPHENONE, 2-(4-PIPERONYLPIPERAZIN-1-YL)-, DIHYDROCHLORIDE